noun
- A radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health.
- synonyms: Rn, atomic number 86
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). radon. Retrieved September 20, 2026, from http://smartdefine.org/radon/definitions/1247683 |
| Chicago | WordNet. 2010. "radon" http://smartdefine.org/radon/definitions/1247683 (accessed September 20, 2026). |
| Harvard | WordNet 2010, radon, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/radon/definitions/1247683>. |
| MLA | WordNet. "radon" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/radon/definitions/1247683> |